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Nintendo DS - MechAssault: Phantom War cheats

Unlock cheat mode:
Finish the game with 100% completion. After watching the ending 
credits, you can access the cheat options.

Unlock Ragnarok Assault Mech in multi-player mode:
While playing the "Divergent Entry" mission, climb the wall to access the 
second area. Turn right. You should see a bunker. Go to the bunker. 
It is locked. Play the hacking mini-game by using the terminal on the left 
side of the bunker and finish the game to open it. Inside you will find 
the Ragnarok Assault Mech. Use that mech to finish the level to unlock 
Ragnarok Assault Mech in multi-player mode.